As background knowledge, we collected information about probability concepts. We define a probability concept as a term that is formally defined in the first five chapters of [1]}, and appears in the index at the end of that book. This produced 69 concepts. For example, `Poisson Distribution', `Correlation', see appendix for full list. We augment each concept with content from [2]}.
On average per concept, we collected \(1.6\)  definitions \(1.04\)  worked-out examples, and \(1.54\)  unworked-out examples, from both books.
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